Book	FZJ-2017-03235

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Implementierung eines Funk-Protokolls (IEEE 802.15.4) und Entwicklung eines adaptiven Zeitsynchronisationsverfahrens für ein Netzwerk intelligenter und autarker Sensoren

Schlösser, M. (Corresponding author)FZJ*

2008
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich
ISBN: 978-3-89336-519-7

Please use a persistent id in citations: http://hdl.handle.net/2128/14313

Abstract: Implementation of a RF-Protocol (IEEE 802.15.4) and Development of an Adaptive Time Synchronisation Method for a Network of Intelligent and Autarkic Sensors Understanding the extremely precise auditory based 3D-orientation of Barn Owls is an outstanding challenge in neurophysiological research. For this purpose as well as for the instrumentation of neurological rehabilitation and sleep research our miniaturized intelligent Sensor and Actuator Network for Life science Applications (iSANLA) will form a solid foundation providing sample rates up to 16 kHz. Based on the IEEE 802.15.4 wireless standard a compact communication protocol as part of the so called intelligent Network Operating Device (iNODE) has been developed and implemented to run on the ultra low power microcontroller platform MSP430 from Texas Instruments. Embedded into the preliminary developed frame based operating system (FRABOS) this protocol allows bidirectional communication between each sensor node and a PC within a star topology. Therefore only 7kByte flash of the MCU resources are needed to achieve a net data rate of 141kBit/s. A time synchronization protocol based on the Reference Broadcast Synchronization (RBS) has been developed in order to merge the acquired data of the distributed iNODE preserving causality. Hence the time synchronous start of the data acquisition inside a network of multiple sensors with a precision better than the highest sample rate is a must . The development of this adaptive time synchronization protocol ensures synchronous measurement start and a frame based duty cycle adjustment with an appropriate precision proven by a jitter below 2ps. Overall the implemented Ultra Small Stack communication protocol creates an avenue for live-streaming 8 kHz measurements with up to 16Bit accuracy and provides enormous potential for future bio medical and neurophysiological applications.

Keyword(s): Biology (2nd) ; Instrument and Method Development (2nd)

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Contributing Institute(s):

1. Zentralinstitut für Elektronik (ZEA-2)

Research Program(s):

1. 344 - Clinical and Health Care Research (POF3-344) (POF3-344)

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Database coverage:

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